Search Publications
Star-forming Clumps in Local Luminous Infrared Galaxies
Sanders, D. B.; Murphy, E. J.; Armus, L. +15 more
We present HST narrowband near-infrared imaging of Paα and Paβ emission of 48 local luminous infrared galaxies (LIRGs) from the Great Observatories All-Sky LIRG Survey. These data allow us to measure the properties of 810 spatially resolved star-forming regions (59 nuclei and 751 extranuclear clumps) and directly compare their properties to those …
deepCR: Cosmic Ray Rejection with Deep Learning
Zhang, Keming; Bloom, Joshua S.
Cosmic ray (CR) identification and replacement are critical components of imaging and spectroscopic reduction pipelines involving solid-state detectors. We present deepCR, a deep-learning-based framework for CR identification and subsequent image inpainting based on the predicted CR mask. To demonstrate the effectiveness of this framework, we trai…
Large-scale CO Spiral Arms and Complex Kinematics Associated with the T Tauri Star RU Lup
Wilner, David J.; Andrews, Sean M.; Huang, Jane +9 more
While protoplanetary disks often appear to be compact and well organized in millimeter continuum emission, CO spectral line observations are increasingly revealing complex behavior at large distances from the host star. We present deep Atacama Large Millimeter/submillimeter Array maps of the J = 2-1 transition of 12CO, 13CO, …
Integral Field Spectroscopy of Fast Outflows in Dwarf Galaxies with AGNs
Veilleux, Sylvain; Liu, Weizhe; Bohn, Thomas +4 more
Feedback likely plays a vital role in the formation of dwarf galaxies. While stellar processes have long been considered the main source of feedback, recent studies have revealed tantalizing signs of active galactic nucleus (AGN) feedback in dwarf galaxies. In this paper, we report the results from an integral field spectroscopic study of a sample…
Distances and Statistics of Local Molecular Clouds in the First Galactic Quadrant
Su, Yang; Yan, Qing-Zeng; Sun, Yan +2 more
We present an analysis of local molecular clouds ( $-6\lt {V}_{\mathrm{LSR}}\lt 30$ km s-1, i.e., <1.5 kpc) in the first Galactic quadrant ( $25\buildrel{\circ}\over{.} 8\lt l\lt 49\buildrel{\circ}\over{.} 7$ and $| b| \lt 5^\circ $ ), a pilot region of the Milky Way Imaging Scroll Painting (MWISP) CO survey. Using the Spectral Clust…
Search for Optically Dark Infrared Galaxies without Counterparts of Subaru Hyper Suprime-Cam in the AKARI North Ecliptic Pole Wide Survey Field
Momose, Rieko; Hashimoto, Tetsuya; Goto, Tomotsugu +25 more
We present the physical properties of AKARI sources without optical counterparts in optical images from the Hyper Suprime-Cam (HSC) on the Subaru telescope. Using the AKARI infrared (IR) source catalog and HSC optical catalog, we select 583 objects that do not have HSC counterparts in the AKARI North Ecliptic Pole wide survey field (∼5 deg2
The Surprisingly Low Carbon Mass in the Debris Disk around HD 32297
Henning, Thomas; Hughes, A. Meredith; Redfield, Seth +18 more
Gas has been detected in a number of debris disks. It is likely secondary, I.e., produced by colliding solids. Here, we report ALMA Band 8 observations of neutral carbon in the CO-rich debris disk around the 15-30 Myr old A-type star HD 32297. We find that C0 is located in a ring at ∼110 au with an FWHM of ∼80 au and has a mass of (3.5 …
A Multiwavelength Analysis of the Faint Radio Sky (COSMOS-XS): the Nature of the Ultra-faint Radio Population
Smolčić, V.; Walter, F.; Riechers, D. A. +7 more
Ultra-deep radio surveys are an invaluable probe of dust-obscured star formation, but require a clear understanding of the relative contribution from radio active galactic nuclei (AGNs) to be used to their fullest potential. We study the composition of the µJy radio population detected in the Karl G. Jansky Very Large Array COSMOS-XS survey …
Constraints on the Physical Properties of GW190814 through Simulations Based on DECam Follow-up Observations by the Dark Energy Survey
Bechtol, K.; Smith, M.; Lidman, C. +100 more
On 2019 August 14, the LIGO and Virgo Collaborations detected gravitational waves from a black hole and a 2.6 solar mass compact object, possibly the first neutron star-black hole merger. In search of an optical counterpart, the Dark Energy Survey (DES) obtained deep imaging of the entire 90% confidence level localization area with Blanco/DECam 0,…
Modeling Unresolved Binaries of Open Clusters in the Color-Magnitude Diagram. I. Method and Application of NGC 3532
Chen, Li; Li, Zhao-Zhou; Zhong, Jing +3 more
The binary properties of open clusters place crucial constraints on star formation theory and clusters' dynamical evolution. We develop a comprehensive approach that models the color-magnitude diagram (CMD) of the cluster members as a mixture of single stars and photometric unresolved binaries. This method enables us to infer the binary properties…